May to petition Iranian president over Nazanin Zaghari-Ratcliffe at UN

Chemical weapons and Brexit are other items high on PM's agenda at general assembly

Theresa May is to petition Iran's president for the release of Nazanin Zaghari-Ratcliffe and call for greater efforts to curb chemical weapons at the UN general assembly in New York, a trip also expected to be punctuated by repeated questions about Brexit.

May sets off for two days at the gathering of international leaders on Tuesday morning. A schedule released in advance by Downing Street shows that among those she will meet later that day is Hassan Rouhani.