WASHINGTON (AP) — Republican House of Representatives Speaker John Boehner said Tuesday that Islamic State group militants pose a serious threat that must be dealt with in Iraq, Syria or wherever they exist as he pressed President Barack Obama to spell out the U.S. strategy to destroy the militants.

The president was scheduled to meet with House and Senate Republican and Democratic leaders on Tuesday afternoon and deliver an address on the issue Wednesday. Separately, administration officials planned a series of closed-door briefings for lawmakers.

"I think we need to be going after the terrorist threat wherever it is and anyone who thinks this is just an Iraq-Syria issue is not paying much attention to what's happening around the world," Boehner told reporters after a House Republican caucus meeting with former Vice President Dick Cheney.

There is no consensus in Congress on whether Obama needs new authorization to attack the militants. Boehner said no decision would be made on whether Congress votes until Obama lays out his plan.

Some lawmakers say the president has the authority under the Constitution and no new vote is necessary. Others are reluctant to vote weeks before midterm elections.

Despite the disagreements, Republicans have seized on Obama's concession last month that the administration had no strategy, with Senate Minority Leader Mitch McConnell using that statement in a campaign ad.

In a speech on the Senate floor, McConnell set the parameters for Obama, saying the president needs to identify military objectives and explain how they will be accomplished.

"He needs to present this plan to the Congress and the American people, and where the president believes he lacks authority to execute such a strategy, he needs to explain to the Congress how additional authority for the use of force will protect America," McConnell said. "The threat from ISIL is real and it's growing. It's time for President Obama to exercise some leadership in launching a response." ISIL is an alternative name for the militants.

In the House Republican meeting, Cheney stressed the importance of American leadership in the world to a Republican caucus that's split between hawks who would tend to favor military action and allies of the tea party movement who want to limit U.S. involvement overseas.