Tensions between Thailand and Cambodia are not going away anytime soon after a fresh round of shooting broke out this week along their contested border.   The flare-up between Thai and Cambodian troops on Wednesday occurred two days after a Thai soldier lost a foot to a land mine while patrolling the frontier. The Thai government has accused Cambodia of planting fresh landmines in the region — an accusation Phnom Penh denies. Bangkok also announced that it was suspending honoring the terms of a