Associated Press SAN'A, Yemen — The writer winked conspiratorially, shifted the golf ball-sized bulge in his left cheek and tapped his temple gently. "Qat is good for the mind. I can't stop writing once I start. But the next morning I read what I wrote and tear it up straight away," chuckled 35-year-old Hatem Bamohriz, nibbling yet another leaf of the mild narcotic. To many government and aid officials, qat has ceased to be funny: Yemen's government is making another push to cut the use of the rubbery green leaf with amphetamine-like qualities that is blamed for many of this...