Only by prosecuting extremists will the world be able to marginalize those who carry out violent acts and those who give credence to their ideas.
Its defeat in Syria may now give way to new dangers.
Giving up means giving the Assad regime and Russia both a strategic and intellectual victory with incalculable consequences for global security.
Political leverage aside, it's a major source of water in a parched corner of the world that harbors significant oil deposits.
The US president's tweet declaring the US would recognise Israeli sovereignty over the Syrian territory was unexpected and will do nothing for regional stability.
How man-made barriers can harm humanity for centuries.
The revolution begun by Syrians exactly eight years ago has been won – by the murderous leader they rebelled against. But the struggle for freedom, dignity and justice Syrians launched is not over.
On the eighth anniversary of the Syrian uprising, scholar Wendy Pearlman writes about the people who risked their lives and raised their voices to fight the oppressive rule of Bashar al-Assad.
The Ministry of Defence says the RAF killed or injured 4,315 enemy fighters in Iraq and Syria over a period with only one civilian casualty. Why do other organisations have very different numbers?
The Syrian civil war has ended, but there are millions of Syrian refugees living in Turkey, Jordan and Lebanon. With danger from a hostile regime back in Syria, what will happen to them now?
Many of the men and women who left homes in the West to join ISIS or similar terrorist organizations in Syria and Iraq as fighters or supporters now want to come home. Should they be allowed back?
With more cases of women such as Shamima Begum expected, the UK is under legal obligations to protect the rights of any children involved.
Iraq beat the Islamic State. Now, its Shia government is jailing and even executing all suspected terrorists – most of them Sunni Muslims. The clampdown may inflame a centuries-old sectarian divide.
A schoolgirl who left Bethnal Green to join Islamic State in Syria is now in a refugee camp and wants to return to the UK.
Now that the US has pulled out Syria, is the war actually over?
Achieving a genuine sense of belonging in a new country takes a lot more than a naturalisation certificate.
Keeping the water and power on, managing sewers and collecting garbage will help communities shattered by the Syrian civil war rebuild – and keep out the Islamic State, says a former aid official.
Obama's plan to withdraw from Afghanistan had several facets and was part of a wider strategy in the Middle East.
The last adult is leaving the White House after a shock decision by the president to pull troops out of Syria.
There is a surprising amount of support for the destruction of antiquities in the Middle East.