Theresa May resigns: key reactions
Prime Minister Theresa May's resignation looks likely to make Britain's looming departure from the EU even more difficult, with some suggesting a hard or "no-deal" Brexit is now almost inevitable.
Here are the main reactions to the announcement she will step down as leader of the Conservative Party, and hence also as Prime Minister, on June 7.
No change
The European Union said the resignation does nothing to change its position on the Brexit withdrawal deal agreed with Britain.
EU Commission President Jean-Claude Juncker noted May's decision "without personal joy", a spokeswoman said, adding that the council of EU leaders has "set out its position" on the Brexit deal.
The EU's chief Brexit negotiator, Michel Barnier, tweeted that he "would like to express my full respect for @theresa_may and for her determination, as Prime Minister, in working towards the #UK's orderly withdrawal from the EU".
'Deliver Brexit'
One of the leading contenders to succeed May, Britain's former foreign minister Boris Johnson tweeted: "A very dignified statement from @theresa_may. Thank you for your stoical service to our country and the Conservative Party. It is now time to follow her urgings: to come...