Saudi Arabia could start investing in Iran 'very quickly,' finance minister Mohammed Al-Jadaan says

Riyadh and Tehran agreed to resume diplomatic relations and reopen embassies in each other's countries following China-led negotiations in Beijing that culminated on March 10.

Some observers are skeptical as to whether the countries — Iran in particular — will stick to the mutual pledges made in the diplomatic agreement, which has yet to be seen.

Saudi Arabia cut diplomatic ties with Iran in 2016, after Iranian protesters stormed the Saudi embassy.