Sri Lanka, March 21 -- New Zealand has banned semi-automatic weapons in the first in a series of sweeping changes promised by Jacinda Ardern in the aftermath of the mosque shootings last Friday that killed 50 peopleThe government on Thursday reclassified a range of semi-automatic weapons, effectively blocking most firearms licence holders from purchasing the military-style guns, in a bid to restrict the potential stockpiling of such weapons ahead of a formal law change being introduced to parliament in early April.The government will implement a buyback scheme and an amnesty period for the weapons to be handed in to police."On 15 March our history changed forever. Now, our laws will too," the prime minister said.Stuart Nash, police minist...