The attack is a key stage in the Iraqi government's bid to drive IS militants from its second city.
Two top US officials are in Mexico to discuss the measures with President Enrique Pena Nieto.
The previous guidelines let transgender students use toilets matching their gender identity,
The bomb targeted a shopping area in the Pakistani city wounding another 30 people, officials say.
An angry report in North Korean state media blames Malaysia for the death of "a citizen".
Kevin Rudd accused the Israeli leader of "torpedoing" peace negotiations in the Middle East.
Funds from EU and Gulf states reliant on peace settlement
Escalation of dispute with Warsaw risks becoming lightning rod for Eurosceptics
Differing views on merits of taxpayer bailouts cast doubt on rescue of troubled bank
Leila de Lima scorns criminal case against her as showdown looms
Central bank caution over anticipating White House economic policy
Liaoning data blamed on fall in output and corrections to rosy historic numbers