Observers say pressure on IMO negotiations appears to be linked to countries that have invested heavily in gas Observers say pressure on IMO negotiations appears to be linked to countries that have invested heavily in gas A bout a fifth of the world’s oil and liquefied natural gas (LNG) passed through the strait of Hormuz , a strip of sea less than 30 miles wide at its narrowest point, before it was in effect closed by the US-Israeli attack on Iran, which sent the price of oil soaring and left