The "CNN Presidential Town Hall: America's Military and the  Commander in Chief" comes as Obama enters the waning days of his  administration. He will be looking to frame the national  conversation on security and military issues that have shaped his  presidency and will, in time, define his foreign policy legacy --  particularly as his would-be successors battle it out ahead of  the November 8 vote.
  Obama's nearly eight years in the White House have played out  against a background of wars. He campaigned on a promise to  extract the US from conflicts in Afghanistan and Iraq, and he's  been roundly criticized for failing to intervene more actively in  Syria's civil war. During his tenure, he's launched a new  offensive against ISIS and instituted policies to deal with the  growing threat of cyber warfare.
  These and other aspects of his service as commander in chief are  currently being hashed out on the campaign trail, notably in  Monday night's first presidential debate.
  At Wednesday's town hall, active duty service members, veterans  and the military community in Fort Lee, Virginia, will have the  chance to ask their own questions of the President. Here are six  things to watch for.
    Politics seems nearly unavoidable in this ugly campaign season.    The White House said ahead of the town hall that Obama wants to    keep the event focus on troops and away from politics. But in    previous appearances, the President has welcomed the    opportunity to push back against Donald Trump and make the case    for Hillary Clinton -- his former secretary of state and the    candidate he's betting on to safeguard his legacy.  
    "The attendees are welcome to ask about any topic or issue they    would like, but the President's view is that there is plenty of    time for politics this season, including time he will spend on    the campaign trail next month," said White House Communications    Director Jen Psaki.  
    "His objective today is to put that aside and instead to focus    on thanking the families and active duty military on the base    for their sacrifice, and to hear from them on challenges they    have faced and anything else they want to talk about during his    visit," she added.  
    The President could also face awkward moments if he's asked to    weigh in on policies on which he and Clinton have taken    different approaches, such as Syria. Clinton has called for a    no-fly zone there despite Obama repeatedly panning the idea.  
    He's acknowledged their differences of approach in the past,    however, particularly over the uses of American power. Clinton    has sometimes advocated for a more interventionist approach to    global problems in places such as Libya. Even so, Obama said    this month in Pennsylvania that "she's got the judgment and the    temperament and the experience to meet any threat."  
    And, he said, "She's prepared to be the next commander in    chief."  
    In stark contrast, the President has flatly called GOP nominee    Donald Trump unfit for the job. Obama has questioned the    Republican nominee's admiration for repressive autocrats such    as Russia's Vladimir Putin and said the real estate mogul isn't    "offering any real policies or plans, just offering division    and offering fear."  
    Obama's political foes on and off the campaign trail have    charged that military spending under his administration has    been inadequate and have put the country at risk.  
    Sequestration, which took effect in 2013, puts $1.2 trillion in    automatic across-the-board cuts in effect over 10 years, with    half of them targeting defense. The issue is one that has    particular resonance for the military members in the audience    concerned about how the defense cuts affect them and their    families.  
    Trump has accused Obama and Clinton of undermining the military    with the cuts, saying, "The generals have been reduced to    rubble," at an NBC Commander in Chief Town Hall on September 7.  
    "I'm going to make our military so big, so powerful, so strong,    that nobody, absolutely nobody, is going to mess with us,"    Trump said.  
    Economics experts have said it's hard to reconcile that goal,    however, with Trump's claims that he would "do it for a lot    less."  
    Obama is likely to explain that the process known as    sequestration wasn't meant to target the military for cuts, it    was supposed to give Congress a strong incentive to find a    compromise on deficit reduction measures -- and that Congress    failed to do so. Obama is also likely to point out that despite    the cuts, the US military is the most powerful and well-funded    in the world by far.  
    Obama recently acknowledged that the five-year-old war in Syria    "haunts" him, and there is perhaps no foreign policy challenge    that has earned him more criticism. The right has assailed him    for not taking a harder line there, allowing the civil war to    spiral and create a safe haven for ISIS. The left has taken    issue with an epic humanitarian crisis and called on the US to    do more. Allies such as Saudi Arabia have argued that the US    should have gotten more involved, or at least armed moderate    opposition groups, early on.  
    Wednesday night will be one of Obama's last chances to defend    his approach and argue that he has always acted in America's    best national security interests in Syria after years of Middle    East conflicts that have brought the US grief. And he'll be    able to point to recent battlefield successes against ISIS to    make the case that his policy toward the extremist group is    succeeding, even as its global terror campaign grows.  
    Obama famously derided 2012 competitor Mitt Romney for naming    Russia as America's "number one geopolitical foe," but four    years later, some of the President's own Pentagon advisers have    started saying the same thing. Not coincidentally, Russian    President Vladimir Putin has assumed a starring role in the    2016 campaign.  
    Moscow has unsettled US allies in Europe with its annexation of    Crimea. It's violated arms control treaties with the US. It's    providing military support for the Syrian regime, which targets    its own people with barrel bombs. And Russia didn't enforce a    Syrian ceasefire that would have allowed for close US-Russian    military cooperation if it had succeeded. US officials and    lawmakers also say Russia is the chief suspect behind    cyberattacks on US election systems and the Democratic National    Committee.  
    Though Obama might have some vulnerabilities of his own on    Russia, any mention of Putin will provide him a political    opening to criticize Trump for saying positive things about the    increasingly autocratic ruler and suggesting that he could have    a more productive relationship with him. At the same time,    Obama will also likely concede that, on certain issues,    Washington has to work with Moscow.  
    A cornerstone of Obama's foreign policy has been his pivot to    Asia, where he's tried to reassure allies concerned about a    rising China by demonstrating American commitment and strength    in the region. But even as he is likely to tout the successes    of this policy, he faces a harsh regional reality in the form    of a nuclear North Korea that has only become more aggressive.  
    The isolated rogue regime has escalated its tests of nuclear    weapons and missiles in the last 18 months, leading most    experts to conclude that it is intent on building the    capability to deliver a weapon to US allies in the region,    including South Korea and Japan, if not to the US itself.  
    When asked about Pyongyang after its most recent nuclear test    on September 9, Obama said that he'll be deploying missile    defense systems to protect South Korea and rallying the    international community to apply existing sanctions and craft    new ones. And he has also called on China to do more to rein    its ally in, even though Beijing is perturbed by the pledged    missile defenses so close to its shores.  
    The many veterans and their family members in the audience on    Wednesday night will have the opportunity to ask Obama about    efforts to reform the dysfunctional veterans' health system and    provide more support for wounded warriors or others returning    from active duty overseas.  
    The Veterans Affairs system has been strained badly as older    veterans age and face declining health. At the same time, over    2.5 million soldiers have served in Iraq and Afghanistan since    2001 -- and they request help at a greater rate than earlier    generations.  
    Obama's first secretary of Veterans Affairs, retired Gen. Eric    Shinseki, resigned in 2014 after it was discovered that    employees throughout the VA hospital system were lying about    months-long waits for veterans seeking care.  
    "The misconduct has not been limited to a few VA facilities,    but many across the country," Obama said at a May 2014 press    conference. "It's totally unacceptable."  
    Obama, who quietly pays regular visits to Walter Reed Medical    Hospital just outside DC to visit wounded servicemen, will    likely point to increased access to care for veterans, success    at reducing the backlog of veterans' disability compensation    claims and efforts to reduce veterans' homelessness while    improving their access to jobs and education.  
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Obama town hall: What to watch - CNNPolitics.com