Former US national security adviser could be a star witness for House inquiry, and would testify against strong opposition from White House

Taylor gives new account of quid pro quo central to impeachment probe, describing Trump's demand that 'everything' Zelenskiy wanted hinged on public vow to investigate Democrats

Turkish president threatens Kurdish fighters if they don't withdraw from planned safe zone by Tuesday evening

Pelosi and Schumer call deal with Turkey a 'sham ceasefire' that shows president is 'flailing'; some Republicans also criticize the move

Deal, which will see US remove sanctions from Ankara, appears to give Erdogan all he sought to achieve with offensive; unclear whether Kurds will accept

US vice president shares tense handshake with Turkish leader before urging him to halt offensive against Kurdish forces in northern Syria

US Secretary of State will arrive in Israel on Friday after talks in Ankara aimed at achieving ceasefire in Turkish invasion of northern Syria; talks to also focus on Iran

Moscow has moved quickly to entrench its leadership role and fill void after Trump ordered pullout of American forces that had been protecting Kurdish-controlled areas

Israeli TV says US secretary of state will meet with Netanyahu after Turkey trip to brief him on American withdrawal

Moscow has moved quickly to entrench its leadership role and fill void after Trump ordered pullout of American forces that had been protecting Kurdish-controlled areas