BEIRUT (Reuters) -Syrian troops exchanged fire with Lebanese soldiers and armed groups in northeast Lebanon overnight and into Monday in a new round of clashes along the border. The mountainous frontier has been a flashpoint in the three months since Islamist rebels toppled Syria's Bashar al-Assad,

Syrian troops overnight into Monday exchanged fire with Lebanese soldiers and armed groups in northeast Lebanon in a new round of clashes along the border. The mountainous frontier is said to have been a flashpoint in the three months since Islamist rebels toppled Syria’s Bashar al-Assad,

Lebanese President Joseph Aoun said Monday that his country's forces would respond to incoming fire from neighbouring Syria that authorities said had