General Keith Kellogg traveled to Paris to call for renewed global pressure on Iran, Reuters reports.

On Saturday, January 11, Donald Trump’s special envoy for Ukraine and Russia attended an event organized by the opposition group “National Council of Resistance of Iran” (NCRI).

“The world must return to a policy of maximum pressure on Iran to help transform it into a more democratic country. This pressure must be military, economic, and diplomatic. There is now an opportunity to change Iran for the better, but it won’t last forever. We must act while Iran is weak,” Kellogg said.

Kellogg has spoken at NCRI events before, but his presence in Paris suggests the new U.S. administration is paying attention to the Iranian opposition, according to journalists.

Trump has pledged to reinstate the policies of his first term, aiming to cripple Iran’s economy and force negotiations over its nuclear and ballistic missile programs, as well as regional security.

Reporters could not confirm whether Kellogg planned to meet with French officials to discuss Ukraine during his visit.