Philippines President Rodrigo Duterte on Sunday said the temporary ban on Filipinos going to work in Kuwait is now permanent, intensifying a diplomatic standoff over the treatment of migrant workers in the Gulf nation. Duterte in February imposed a prohibition on workers heading to Kuwait following the murder of a Filipina maid whose body was found stuffed in a freezer in the Gulf state. The crisis deepened after Kuwaiti authorities last week ordered Manila’s envoy to leave the country over videos of Philippine embassy staff helping workers in Kuwait flee allegedly abusive employers. Duterte on Sunday described the situation in Kuwait as a “calamity”. Duterte said workers returning from Kuwait could find employment as English teachers in China, citing improved ties with Beijing.