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"Finally, after we pushed for two weeks, we are getting a briefing tomorrow. Secretary Esper, Gen. Milley and others will be there," Schumer told reporters.

The briefing comes weeks after Trump announced that he was pulling back U.S. troops from northern Syria, paving the way for Turkey's military invasion.

The Senate will get a briefing on's Syria strategy on Wednesday, according to Senate Minority Leader(D-N.Y.).Esper said last week that the Pentagon was sending armored vehicles into Syria to defend oil fields. Trump also announced on Sunday that Abu Bakr al-Baghdadi, the leader of ISIS, had been killed in a raid over the weekend. Both are likely to be raised during Wednesday's closed-door briefing.