PBS News Hour: on War & Peace

Andrew Yang: Repeal post-9/11 Authorization for Use of Military Force

• Foreign policy and defense: Supports NATO, would create a secretary of cybersecurity.
• Yang believes in NATO and other international alliances, and would institute regular Pentagon audits.
• He would repeal the "Authorization for Use of Military Force" enacted after the Sept. 11, 2001 attacks, and hand the power to declare war back to Congress.
• As part of his focus on reducing military spending, Yang would redirect 10 percent of the annual military budget to a domestic infrastructure initiative called the "Legion of Builders and Destroyers."
• He would also create a secretary of cybersecurity position.

Beto O`Rourke: Discuss U.S. policy in Syria in a more meaningful way

O'Rourke has said he thinks U.S. policy in Syria should be debated and discussed in a more meaningful way. It is not clear if he supports troop withdrawal from the country. Likewise it is not clear if he would withdraw troops from Afghanistan.

Bernie Sanders: End Syrian conflict; pull out U.S. troops

• Foreign Policy: Use diplomacy to end Syrian conflict. Pull out troops, but in different way from Trump. Cut U.S. support in the conflict in Yemen, hold the Saudi crown prince "accountable" for crimes.
• Sanders would pull U.S. troops from Syria, but said he would do it in a different, less "erratic" way than Trump recently announced. He believes diplomacy with Russia and Iran can turn things around in Syria.
• He also believes the president did not have the right to launch airstrikes against the Assad regime and that war powers must get more rigorous oversight and/or approval from Congress.
• A longtime anti-war activist, Sanders voted against the Iraq war resolution in 2002.
• He regularly called for the U.S. to withdraw troops from Afghanistan and Iraq.
• In both Afghanistan and Syria, Sanders has said that he believes the U.S. should remain involved, though with no ground troop presence.

Bill Weld: Supports non-nuclear proliferation efforts

Amy Klobuchar: Keep US military presence in Syria

John Delaney: Withdraw military aid from Saudi forces fighting in Yemen

• Foreign policy: Supports punishing Saudi crown prince for the murder of journalist Jamal Khashoggi.
• Delaney strongly supports the Senate vote declaring Saudi Crown Prince Mohammed bin Salman responsible for the murder of journalist Jamal Khashoggi.
• Delaney has also praised the Senate's decision to withdraw military aid from Saudi forces fighting in Yemen.
• He has not spoken publicly about Trump's decision to withdraw American forces from Syria.

Kamala Harris: Time for a political solution in Afghanistan

• Afghanistan: Wants a "political solution" to end the war, bring troops home.
• After a trip to Afghanistan last month, Harris said she supports a "political solution" to the war that would allow U.S. troops to return home.
• She has not taken a public position on Trump's planned U.S. troop withdrawals from Afghanistan and Syria.

Elizabeth Warren: Withdraw US troops from Afghanistan, Iraq and Syria

• Afghanistan, Iraq and Syria: U.S. should withdraw troops from those countries.
• Warren, a member of the Senate Armed Services Committee, supports reducing the U.S. military's presence in some global hotspots.
• Last November, she called for the immediate withdrawal of American troops from Afghanistan.
• Warren also says the U.S. should withdraw service members from Iraq and Syria, though she has not gone into detail about what timetables she would support for those withdrawals.

Kirsten Gillibrand: Withdraw from Afghanistan & Syria

• Afghanistan and Syria: Withdraw from Afghanistan. Do not arm Syrian rebels.
• For years, Gillibrand has pushed for U.S. withdrawal from Afghanistan.
• She has opposed efforts to arm Syrian rebels and she slammed the airstrikes ordered against Syria in the spring of 2018, saying that Trump did not have the authority to order them.
• Gillibrand also argued that President Barack Obama did not have authority to send U.S. troops to Syria.

Kirsten Gillibrand: End military aid to Saudi Arabia to attack Yemen

• Gillibrand co-sponsored legislation that would end U.S. support for the Saudi-led conflict in Yemen.
• She has written that Saudi Arabia is using American weapons to "terrorize Yemeni civilians."
• In regards to the murder of journalist Jamal Khashoggi, Gillibrand wrote that the U.S. should hold "the Saudi government to account."
• It is not clear where she stands on whether Saudi Crown Prince Mohammad bin Salman personally was responsible for the killing.

Tulsi Gabbard: End US support for Saudi-led conflict in Yemen

• In general, Gabbard believes the U.S. should be less involved in foreign conflicts and have a smaller troop presence in many places around the world. She has specifically called on the U.S. military to pull out of Afghanistan.
• Gabbard also opposes US military presence and action in Syria.
• The congresswoman believes U.S. action around the world often benefits extremists. She also has argued that Democrats and others should not back away from the term "Islamic extremists."
• Gabbard has said the US is complicit in a humanitarian disaster by giving support to the Saudis, because they have cut off aid to large parts of the Yemeni population while battling rebels there.
• She also sent a controversial tweet that was highly critical of Trump following news that the U.S. was standing by Saudi leadership despite intelligence implicating the kingdom's crown prince in the murder of journalist Jamal Khashoggi.
• Gabbard believes Saudi Arabia is a hub of anti-Western extremism.

Julian Castro: Withdraw US troops from Syria

• Syria: Withdraw U.S. presence over a planned period of time.
• In an appearance on NBC's "Meet The Press" last month, Castro said it was "time for us to pull out of Syria," but insisted it must be on a planned timeline.
• He criticized Trump's sudden announcement of a potential withdrawal as "not the way it should be done."

Donald Trump: Walk away from Iranian nuclear talks; increase sanctions