HUNGARIAN troops are marching for the border with Serbia armed with rubber bullets, tear gas and net guns after MPs authorised the use of non-lethal force against migrants. Heavily armed soldiers were set to be dispatched to defend the frontier today after Hungary's parliament voted in favour of a fresh crackdown on the thousands of migrants who have massed there trying to get into the EU. MPs have passed a new law allowing troops to use rubber bullets, flares, stun grenades and net guns against anyone who tries to break through the country's controversial barbed wire fence. Hungarian prime minister...