Experts say Iran and its adversaries could benefit from the ongoing naval escalation and also question the timing of Thursday's attacks on oil tankers as Japan's PM Shinzo Abe was having a meeting with Iranian Supreme Leader Ayatollah Khamenei.
US President Donald Trump bypassed Congress to sell $8.1 billion in arms to Saudi Arabia and other allies, citing the threat from Iran, followed closely by a significant defence agreement with the UAE set to have a far-reaching impact.
Qatar is trying to "defuse escalating tensions" across the Persian Gulf, Al Jazeera reports amid allegations of oil tanker sabotage, a drone attack by Yemen's Iranian-allied rebels and deployment of US warships and bombers to the region.