First Thing: Trump tells critics to ‘sit back and relax’ as Iran claims to target US base

US says it struck Iranian military sites at the weekend, as Iran targets an airbase used by the US to attack southern IranGood morning, Martin Belam here. I will be popping into your inbox writing First Thing regularly for the next little while. Here are today’s main stories …Is this the end of the ceasefire, then? The US and Iran have sporadically exchanged strikes since their ceasefire took effect in early April, as negotiations aimed at a more durable agreement drag on. A similar exchange occurred last Thursday. The war launched by the US and Israel on 28 February has