The Senate Foreign Relations Committee will question President Trump’s national security adviser Wednesday about the administration’s long-awaited plan to defeat the Islamic State, said Sen. Bob Corker, the panel’s chairman.

Lt. Gen. H.R. McMaster is set to brief senators during a closed-door meeting and Corker said the status of the new strategy for defeating the terrorist group will be a top concern. Similar private meetings have been held recently with Secretary of State Rex Tillerson and United Nations Ambassador Nikki Haley, according to Corker’s office.