A research project by the UK's Stabilisation Unit explores the vital role of political deal-making in reducing violent conflict, say the organisation.

British and Omani forces were engaged over the last few weeks on Ex Saif Sareea 3, culminating in an fire power demonstration lasting more than 30 minutes at two separate locations in Oman.

Minister for the Armed Forces Mark Lancaster visited Iraq, Bahrain, and Oman during his visit to the Gulf.

The coalition continues to help forces in both Iraq and Syria establish security and stability, the spokesman for Operation Inherent Resolve said to the press.

The Russian military said Tuesday that while Syrian air defences shot down the aircraft, Israel was to blame for putting it in the line of fire.

The consequences of a Russian-Syrian offensive into Idlib, Syria, against terrorists hiding there would almost certainly be a humanitarian disaster, the chairman of the Joint Chiefs of Staff said to press.

The coalition continued to strike Islamic State in designated parts of Syria and Iraq, conducting 16 strikes consisting of 22 engagements in the last week, officials reported.

General Austin Scott Miller assumed command of the NATO-led Resolute Support Mission from General John ''Mick'' Nicholson at a ceremony at mission headquarters in Kabul, Afghanistan.

Iran has unveiled what it calls a "new domestic fighter jet" with President Rouhani saying Iran's military strength is aimed at creating "lasting peace".

Israel has shot down a Syrian jet with surface-to-air missiles after the aircraft crossed into Israeli airspace.