While the magnificent samba schools of Brazil were getting ready for the grand carnival in Rio de Janeiro, a modest carnival troupe toured a small Argentine town to draw attention to an urban problem that has brought the central province of Córdoba to the brink of environmental disaster: garbage.

Crimea is facing a violent wave of human rights abuses, activists warn, with kidnappings of journalists and rights campaigners, harassment of non-Russian minorities and reports of growing persecution of anyone thought to be sympathising with the pro-European Kiev government.