Joe Biden visits U.S. troops in Kabul, Afghanistan, in 2011 when he was vice president. Biden has been highly critical of President Trump’s foreign policy and says he’ll work to improve frayed relations with many traditional U.S. partners.

U.S. Vice President Joe Biden, left, is escorted by an unidentified U.S. military official to visit Afghan soldiers at the Military Training Center in Kabul, Afghanistan, Tuesday, Jan. 11, 2011. Vice President Joe Biden said Tuesday that America will not cut and run in 2014, when the U.S.-led military coalition plans to hand over control of security to Afghan forces. (AP Photo/Dusan Vranic)