KATHMANDU: CPN-UML Chairman KP Sharma Oli has said that Nepal's mountaineering sector should be established as the lucrative sector in the world market. At a programme organised to welcome different other parties' leaders in the UML on Thursday, Oli said that the left alliance was also committed to promoting tourism of mountainous region. During the programme, he said that UML always negates the ethnic conflicts in the country and added that his party was capable of giving leadership for country's prosperity. On the occasion, Oli welcomed former general secretary of Madhesi Janadhikar Forum (Loktantrik) Soman Tshiring Sherpa into the UML.