The battle for Syria
Inside a secret civil war, Channel 4 News witnesses Syria's bloody fight for freedom.
The most astonishing aspect of today's deal on Iran's nuclear capability is that neither side is negotiating the terms of its defeat.
A deal on Iran's nuclear programme would be a historic event - but it could come at the expense of angering some of the US's staunchest allies.
In the wake of the Tunisia attack, the prime minister and defence secretary call for MPs to consider if Britain should send its warplanes to bomb the self-styled Islamic State group in Syria.
The self-proclaimed Islamic State group is reported to have planted mines and bombs in the ancient city of Palmyra world heritage site - home to some of the world's best preserved ancient Roman ruins.
Barrel bombs, indiscriminate weapons responsible for the deaths of 11,000 civilians in the Syrian civil war, are the increasing weapons of choice of the Assad regime.
It has been a bad week for the American-led "strategy" against militants from so-called Islamic State - a strategy with the US president himself views with great qualms and some reluctance.
Islamic State fighters are reported to have seized the last border crossing between Syria and Iraq, in the latest advance by the jihadist group against Bashar al-Assad's struggling military.
Concerns are raised over the fate of ancient monuments in the Syrian city of Palmyra - but the victory by the Islamic State group is first and foremost a strategic one.
Islamic State militants group claim they are in control of all of the Syrian city of Palmyra, home to one of the world's most important heritage sites, vowing to destroy its priceless treasures.