In Yemen, two American tourists have been kidnapped by tribesmen near the capital Sanaa. <br/><br/>The couples were seized by armed men in the Bani Mansour district 70 kilometres from the capital. <br/><br/>Their Yemeni driver and tourist guide were also kidnapped. The kidnappers are demanding the release of a relative, jailed in a land dispute by the authorities. More than 200 foreigners have been kidnapped in recent years, most are released unharmed.<br/>