BANGKOK (Reuters) -Thailand has reinforced its military presence along a disputed border with Cambodia, following an increase in troops on the other side, Thailand's defence minister said on Saturday, as tensions simmer following a deadly clash. For days, the two Southeast Asian governments have exchanged carefully worded statements committing to dialogue after a brief skirmish in an undemarcated border area on May 28 in which a Cambodian soldier was killed. But Phumtham Wechayachai, who also serves as Thailand's deputy prime minister, said that during talks bilateral talks held on Thursday, Cambodia had rejected proposals that could have led to a de-escalation.