Reuters: "Sudanese President Omar Hassan al-Bashir, under international pressure over wartorn Darfur, said on Sunday his government would impose a travel ban on U.S. officials that would confine them to the capital Khartoum.... Sudan is under heavy international pressure to allow 20,000 U.N. troops into the western region of Darfur to replace 7,000 poorly funded African Union troops tasked with monitoring a shaky ceasefire."