BBC News Now

President Zelensky said Ukraine is ready to respect the energy ceasefire announced by President Trump at the weekend if Russia does the same, speaking at the Warsaw Security Forum after Russian strikes hit Ukrainian infrastructure overnight, including deadly attacks in Kharkiv. He said Russia must stop strikes on Ukraine's energy system and critical infrastructure if it wants Ukraine to halt long-range strikes on its oil refineries and exports. The Kremlin's Dmitry Peskov said contacts around an energy ceasefire were continuing. A BBC correspondent in Kyiv described power outages and disruption in the city, said Russia had not committed to the ceasefire, and reported Ukrainian doubt that the US would apply additional pressure to the Kremlin.

Saudi officials said one person was killed and 11 injured in an attack on Riyadh's King Khalid International Airport by the Iran-backed Houthi group from Yemen, after a previous missile strike killed 13 and injured more than 300. The Houthis renewed warnings against using airports in Saudi Arabia, saying they were targeting the kingdom over its support for government forces in Yemen's civil war. A foreign editor said the attacks increased pressure on Saudi Crown Prince Mohammed bin Salman and could push Gulf countries toward a collective response, with Iran also benefiting.

At the Warsaw Security Forum, NATO's Supreme Allied Commander of Forces in Europe, US General Alexus Grynkewich, set out a theory of victory under which NATO would block an initial attack, blunt any ongoing advance, and break the enemy's warfighting system. He said NATO was not seeking war but was ready to defend its territory, that its readiness and deterrence were aimed at preventing conflict, and that the alliance's plan accounted for a possible second front in the Asia Pacific. He also said Ukraine's frontline had been largely stabilized and praised Ukrainian fighting spirit, while noting the need to improve stockpiles and industrial capacity.