The leaders of Vietnam and the Philippines upheld the importance of keeping the freedom of navigation in the South China Sea amid tensions in the strategic waterway where Beijing lays expansive claim.“As fellow claimant states, we reaffirm that maintaining peace, stability and the freedom of navigation and overflight in the South China Sea remains non-negotiable,” Philippine President Ferdinand Marcos Jnr said. He spoke at a joint briefing with visiting Vietnamese leader To Lam after their...