British society must stay "vigilant" to spot signs of radicalisation in young people, Philip Hammond has said.
Talha Asmal, 17, reportedly became Britain's youngest suicide bomber when he blew himself up while fighting for Islamic State in Iraq.
Speaking about the teenager's death, the foreign secretary said: "Teachers, parents, social workers, people in the community all need to be vigilant and look for signs of early radicalisation."
Foreign Secretary Philip Hammond has said the Magna Carta is still an "important" part of British history that includes the "fundamental principals of the rule of law".
2015 marks the 800th anniversary of the Magna Carta with more events planned from tomorrow.
It would be "wrong" to give 16 and 17-year-old's the vote in the EU referendum, Foreign Secretary Philip Hammond has said.
Speaking in the Commons during a debate on the European Union Referendum Bill, Mr Hammond said: "Some will argue that we should extend the franchise further to 16 and 17-year-olds perhaps or even to citizens of other EU countries resident here. We do not agree."
Shadow foreign secretary Hilary Benn confirmed Labour would seek an amendment to the Bill to allow 16 and 17-year-old's to vote.
"It is the same old excuse of an argument against giving people a say and it's completely at odds with the other rights we already give to 16 and 17-year-olds, which include the right to work, pay tax, join the armed forces," Mr Benn said.
Mr Hammond also confirmed that the referendum could be held earlier than planned if renegotiation is completed ahead of schedule.
Philip Hammond said there was "always" going to be a group of Conservatives that want to leave the EU "come what may" after it was reported that more than 50 Tories are set to lead the campaign to leave the union.
The Foreign Secretary told the BBC's Andrew Marr Show, "That is not where the Government is, that is not where the majority of British people are."
Hammond agreed the EU "isn't working" as it is at the moment, saying it is "not fit for the 21st Century" but that the Government thinks it is "fixable".
"We can get a package of reform that will make it work in Britain's interests, so that we get the benefits of the single market, being part of the European Union, while fixing some of the things that so irritate the British people about the way this union has changed unrecognisably over the past 40 years and then put it to the British people, and they they will decide in the referendum."
Britain will increase financial assistance to Iraq to help in the battle against Islamic State militants, Philip Hammond has announced.
A reported £2 million will be contributed to a new United Nations fund, while Britain will continue to make a "significant contribution to intelligence, surveillance and reconnaissance efforts" in the fight against the terror group.
The money will go towards a UN Funding Facility for Immediate Stabilisation (FFIS) that will push resources into areas as they are cleared of IS fighters.
The Foreign Secretary confirmed the contribution after attending an anti-IS summit with international ministers in Paris on Tuesday at which Iraq's prime minister, Haider al-Abadi, said his country needed "the support of the world" but "we are not getting it" in pushing back the IS advance.
Philip Hammond is to attend a summit to discuss what more can be done to defeat Islamic State.
The Foreign Secretary will join foreign ministers in Paris to review the success of the international coalition's efforts to "degrade and destroy" the terror group, which has captured large swathes of Iraq and Syria.
Representatives from 22 countries involved in the anti-IS coalition, including Iraqi prime minister Haider al-Abadi.
The meeting comes amid reports the Government is preparing to send British troops to more dangerous parts of Iraq to train local forces battling IS.
Speaking ahead of the summit, Mr Hammond said: "I will discuss with key partners the military campaign and the coalition's efforts to cut off Isil's finances, reduce the flow of fighters, undermine their brutal ideology, and stabilise areas liberated from Isil."
The EU needs to work out a plan with the Libyan authorities to help stem the tide of migrants attempting to cross the Mediterranean, foreign secretary Philip Hammond has said.
Mr Hammond was speaking during a summit in Brussels aimed at finding a solution to the people-traffickers bringing desperate African and Middle Eastern migrants into Europe.
"There's quite a number of steps that have to be dealt with," he said. "But I think we're going to take an important first step in our decision today."
Philip Hammond is to remain the Foreign Secretary in David Cameron's Cabinet.
Philip Hammond will remain as Foreign Secretary.
Foreign Secretary Philip Hammond has said sanctions on Russia must remain in place and warned further sanction were possible if Russia does not comply with the Minsk agreement.
"The European Union will remain united on the question of sanctions, sanctions must remain in place until there is full compliance," Hammond said at a joint conference with his Polish counterpart in Warsaw.
"We will prepare possible new sanctions, which could be imposed quickly if there is further Russian aggression of if the Minsk agreement is not complied with," Hammond said.
Foreign Secretary Philip Hammond has accused Russian President Vladimir Putin of acting like a "mid-20th century tyrant" over Ukraine,
Mr Hammond said that President Putin reverse its annexation of the Crimea and start respecting international law.
He also predicted that Russian economic decline - partly as a result of international sanctions - would curb its "outrageous" foreign adventures.