The "absolute ruler" of Qatar, who was born in 1952, is the cousin of the country's prime minister. Charles invited him and his wife, Sheika Moza, an old friend, for tea at Clarence House in May last year, when the subject of Chelsea Barracks was discussed. The court heard that after the meeting, the Emir "went mental" with the head of Qatari Diar because he felt the sensibilities of a fellow royal had been offended. The Emir is said to have demanded that the scheme be withdrawn as soon as possible.