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Douglas Carswell has said he is leaving the Conservative Party because too much of the leadership "aren't serious about the change that Britain so desperately needs".
The Clacton MP says too many Conservatives "talk the talk" on key issues at elections but have not done enough to make change happen.
The UN has tweeted that they will continue to provide humanitarian assistance to the people of Gaza following the end of the recent conflict between the Israeli military and Hamas.
In light of the ceasefire, we are continuing our humanitarian assistance and restarting early recovery activities in #Gaza.
Tory MP Douglas Carswell revealed he had not told David Cameron he was defecting to Ukip.
Carswell "I've not yet spoken to the Prime Minister...if I'd phoned him up beforehand you'd have heard about it in another way"
The Prime Minister and Mr Carswell's relationship has not always been friendly, with Mr Cameron once telling the Clacton MP he needed to "get a sense of humour".
ITV News Political Correspondent Paul Brand is following updates from the special Ukip press conference at which Mr Carswell is speaking.
Carswell says he thinks members of his local party will come with him. But feels sad to be leaving them.
Clacton MP Douglas Carswell has said he will stand down as an MP and then stand for Ukip in the resulting by-election following his defection from the Tories.
He today announced that he would be leaving the Conservative Party, claiming the party's leadership are "not serious" about the change the UK needs.
If successful, Mr Carswell would become the eurosceptic party's only Westminster MP.
Michel Platini said his commitment not to stand against Sepp Blatter for the Fifa presidency was the best decision for Uefa.
– Uefa president Michel Platini
This is the decision I have made. I wanted to do what is best for Uefa,
Now is not my time, not yet. I want to complete what I have started and I want to go to the end of my contract with Uefa and if the federations wish I will still have a few years before this contract comes to an end.
I have thought long and hard but I never managed to convince myself that I had to go to Fifa.I chose from the heart and on the basis of my passionate feeling.
The Conservative MP for Clacton, Douglas Carswell, has used a press conference this morning to announce he is defecting to Ukip.
Mr Carswell, long a strong eurosceptic voice on the Tory back benches, made the announcement alongside Ukip leader Nigel Farage.
The Conservative MP for Clacton, Douglas Carswell, has defected to Ukip.
More than 20,000 people could be infected by the current outbreak of the Ebola virus, the World Health Organisation said.
They said the actual number of cases in four West African nations could already be two to four times higher than the reported 3,069, as they issued a strategic plan to combat the outbreak.
They said: "The actual number of cases may be 2-4 fold higher than that currently reported."
They added that their road map "acknowledges that the aggregate case load of Ebola Virus Disease could exceed 20,000 over the course of this emergency."
They said: "Response activities must be adapted in areas of very intense transmission and particular attention must be given to stopping transmission in capital cities and major ports, thereby facilitating the larger response and relief effort."
Ukrainian president Petro Poroshenko has said a Russian military invasion has taken place in Ukraine.
Poroshenko has called an urgent meeting of the country's security and defence council to "decide next steps", the Ukraine presidential website stated.
The south-eastern Ukrainian town of Novoazovsk has fallen under the control of the Russian military, Ukraine's Security and Defence Council has said in a Twitter post.