The world this week--PoliticsThe G20 summit in Bali concluded with a strongly worded statement condemning Russia’s invasion of Ukraine and demanding its immediate withdrawal.Sergei Lavrov, Russia’s foreign minister, attended the gathering, and criticised it for being too politicised.A missile struck a farm in Poland, close to the border with Ukraine, killing two men and sparking fears of an escalation of the war.But NATO reacted cautiously.It now seems likely that the missile was not fired by Russia, but was probably Ukrainian, meant to intercept part of an attack by Russia involving around 100 missiles that was a response to Ukraine’s liberation of Kherson.Britain and France signed a new agreement that will increase the number of migration officers in northern France in the hope of reducing the flow of illegal migrants crossing the English Channel.“Irregular entries” have become a problem across the EU again.Over 280,000 were recorded in the first ten months of 2022, up by 77% compared with 2021.The western Balkans saw the biggest influx of illegal migrants, but the Mediterranean routes also recorded large increases.