Senate Republicans are expressing growing concerns about the lack of a clear strategy to end the ongoing military conflict with Iran.

GOP lawmakers are frustrated over rising U.S. casualties, high gas prices, and uncertainty surrounding the administration’s request for an additional $80 billion in war funding.

Some Republicans are calling for a clear “off-ramp” to the conflict, while others argue the U.S. must intensify efforts to prevent Iran from developing nuclear weapons.

President Trump has threatened further strikes on Iranian infrastructure if attacks on ships in the Strait of Hormuz continue, The Hill has reported.

The debate has created political pressure for Republicans ahead of the midterm elections as lawmakers seek more details on the war’s goals and timeline.