From Our Own Correspondent

Kate Adie presents stories from Ukraine, Greenland, the US and Germany.Ukraine has this week come under its heaviest bombardment in weeks, with the UK and the EU summoning their Russian envoys after their offices in Kyiv were hit. Quentin Sommerville has been in Donetsk, the area Vladimir Putin wants to fully control in the resource rich region of the Donbas, as residents flee attacks and soldiers tell of the intensification of the battle there.Greenland’s status has been thrust into the spotlight after the US president has repeatedly said he wanted to annexe the semi-autonomous nation for its strategic position and mineral wealth. And despite having broad self-government since 1979, Greenland’s foreign and defence policy is made in Copenhagen. On an island of just over 55,000 people, where fishing is the primary source of income, independence for Greenland would mean either increasing tourism or allowing the mining of minerals like rare earth metals. Bob Howard has been to the capital Nuuk.In the US, a recor