Len Leng, Kocha Olarn, Helen Regan and Jonny Hallam, CNN Phnom Penh, Cambodia / Bangkok, Thailand (CNN) — Cambodia and Thailand exchanged fire across their disputed border for a fourth day on Sunday, ...

Walls, tall and deadly, line three sides of Gaza. On the fourth lies the sea, stretching out to the horizon. Its waters, and the fish within them, have long nourished Gazans isolated from the outside ...