that are threatening its stability
Clashes between government troops and Shia fighters in northern Yemen have reportedly left dozens of people dead, as conflict in the country escalates.
Troops backed by tanks and aircraft attacked rebels near the border with Saudi Arabia on Wednesday, a day after the government vowed it would strike at Houthi fighters with an "iron fist".
Mohammed al-Qadhi, the foreign correspondent for Abu Dhabi's The National newspaper, told Al Jazeera there were reports of "tens or dozens killed and injured".
He said: "They're launching an all-out war right now and we've heard reports from Sadaa that the military is using planes to attack the strongholds of the rebels and many people are fleeing.
"There have been reports that the human situation is going very critical as so many people have left their houses, and this has added pressure to the camps of refugees."
There are concerns fighting in Yemen could spill over into a regional conflict.
Hussein Shobokshi, a columnist for Asharq Alawsat, told Al Jazeera there were many factors for regional players to worry about.
He said the US, which has been worried about al-Qaeda activity in Yemen, "did not pay attention to what was happening in Yemen or at the same time what's developing in Somalia". Read more here ...
Source: Al Jazeera (English)