World leaders had hoped to secure U.S. backing for tougher sanctions on Russia, which struck Ukraine with missiles and drones overnight.

The anticipated third meeting, scheduled for June 17, will focus on sanctions, peace talks, weapons purchases, and economic relations — and may shed light on the future of U.S. support for Ukraine.

Group of Seven powers, holding talks Tuesday at a summit that Donald Trump left early, promised Ukrainian President Volodymyr Zelensky fresh support as Russia stepped up attacks on its neighbor.