When you hit 25, it may be high time to start facing certain facts. What you see as staying true to the ideals of your youth, others may view as simply callow and reckless. Now is a good time to take responsibility for the consequences of your actions – to start, in other words, behaving like a grown-up. There was little sign of newfound maturity at Hamas’s 25th birthday bash in Gaza this weekend – featuring, as if to underline the sense of a kids’ party, plastic guns, toy rockets and a giant model of a long-range Fajr missile. As usual, its leaders vowed from the stage never to recognise Israel and to “free the land of Palestine inch by inch”.