BEIRUT, Feb 3 (AFP) – The Lebanese opposition has stepped up its campaign for Syrian troops to quit the country, on the back of mounting US impatience with Damascus, which left the Baathist regime on Thursday calling for dialogue. As Syrian Deputy Foreign Minister Walid Muwallem held a round of talks with dozens of politicians in Beirut on Wednesday, members of the anti-Damascus opposition met behind closed doors to turn the screws on the Syrian question. Afterwards, it called for a complete Syrian withdrawal in accordance with the Taef agreement and an immediate end to the “dangerous crisis” between Beirut and international community.