ISLAMABAD: In a significant political development, the government on Tuesday invited the main opposition Pakistan Tehreek-i-Insaf (PTI) to sit together and shun their differences specifically for the sake of external and internal security threats to Pakistan and fragile security situation in the region. The ruling PML-N extended the olive branch to the PTI when Special Assistant to PM on Political Affairs Rana Sanaullah met Mehmood Achakzai and Raja Nasir Abbas, leaders of the opposition in the...