1.The Joint Chiefs of Staff said Tuesday that engine combustion problems are behind North Korea's botched spy satellite launch made Monday. The latest launch came just hours after leaders of South Korea, Japan, and China held a trilateral summit in Seoul.

2.United Arab Emirates President Mohamed bin Zayed Al Nahyan made a state visit to South Korea on Tuesday to discuss ways to expand cooperation in energy, defense and other areas. The UAE president is set to hold summit talks with South Korean President Yoon Suk Yeol on Wednesday.

3.During the final session of the 21st National Assembly on Tuesday, a bill mandating a special counsel investigation into the military's response to a Marine's death last year failed to pass a revote after it was vetoed by President Yoon Suk Yeol earlier this month.