Authorities in Ukraine and Russia said their emergency alert mobile apps had been targeted by cyberattacks, with users in Ukraine receiving false warnings of an imminent nuclear threat.It was not clear if the attacks late Sunday were related.

Ukraine has resumed strikes on Russian refineries and oil sites, Moscow says, after a reported pause tied to the U.S. midterms that Kyiv denies. Zelenskyy says he’d hold off for a month in exchange for a month of Patriot interceptors, as Russia keeps hitting Ukraine’s power grid.