President Volodymyr Zelenskiy warned European NATO members on Tuesday that they risked being attacked by Russia if it was not defeated in Ukraine, urging them to heed U.S. calls to sign off a big new spending goal for the alliance at a summit.

This week’s NATO summit isn’t about the U.S. strikes on Iran, but Iran will be a topic because of its drone supplies to Russia, said alliance Secretary-General Mark Rutte. NATO leaders meet in The Hague on Tuesday to approve big spending increases.