WASHINGTON (AP) — A State Department arms control official says the U.S. is considering taking economic measures against Russia for violating a key nuclear weapons treaty.

Rose Gottemoeller, undersecretary of state for arms control and international security, told a House panel on Wednesday that the U.S. also is looking at what can be done militarily to make sure Russia does not gain a significant military advantage from violating the Intermediate-Range Nuclear Forces Treaty signed with Soviet leader Mikhail Gorbachev in 1987.

The treaty says the U.S. and Russia cannot possess, produce or test-fly a ground-launched cruise missile with a range of 300 to 3,400 miles (5471.52 kilometers) (480 to 5,500 kilometers).

Russia denies being in violation.

Congress has been stepping up pressure on the White House for months to confront Russia over the treaty violation.