Kim Jong Un declared he was no longer bound by his pledge to halt major missile tests and would soon debut a “new strategic weapon,” adding to President Donald Trump’s foreign policy concerns in a politically charged election year.

The North Korean leader told a gathering of party officials in Pyongyang that U.S. actions left him no choice but to reconsider commitments that underpinned three unprecedented meetings with Trump over the past 18 months, the state-run Korean Central News Agency said Wednesday. Kim called for “shocking actual action” to make the U.S. “pay for the pains” suffered by North Korea under the Washington-led sanctions regime, KCNA said.

“The world will witness a new strategic weapon to be possessed by the DPRK in the near future,” Kim said, referring to the country’s formal name. The speech came during an unusual four-day party meeting and appeared to replace the televised address Kim has delivered every New Year’s Day since 2013.