The rubble of a collapsed building is pictured following Israeli bombardment, in Nabatieh in southern Lebanon on June 21, 2026. Iran warned the US to "be careful" after the US president threatened to strike the Islamic republic over its support for Hezbollah, even as the arch-foes held talks in Switzerland seeking a deal to permanently end the Middle East war. Disagreement over key sticking points and the threat of renewed fighting in Lebanon weighed on the talks, with Washington and Tehran exchanging threats in parallel with the negotiations. (Photo by MAHMOUD ZAYYAT / AFP via Getty Images) /