evidence: Hun Sen accuses Laotian troops of trespassing into border area and threatens military response if they fail to withdraw. [...] Hun Sen said on Friday that about 30 Laos soldiers crossed into Cambodian territory in April in northern Stung Treng province despite repeated requests by his government for them to leave the area. [...] "I appeal to Laos Prime Minister Thongloun Sisoulith to withdraw troops from Cambodian territory without any conditions," Hun Sen said during a ceremony in the capital, Phnom Penh.