May refuses to give 'cast iron guarantee' over customs backstop

PM says end date for plans to prevent hard border in Ireland is ‘temporary’Theresa May has refused to give a “cast iron guarantee” that her backstop plan to prevent a hard border between the Irish Republic and Northern Ireland would only be temporary.Speaking to reporters as she flew to Canada for the G7 heads of government meeting, May insisted that the inclusion of a fixed end date for the arrangement – which in an alleged stand off nearly cost her her Brexit secr