If Iran is seeking ways to further isolate itself from world, they're doing a splendid job of it. A member of the Iranian Parliament has come out swinging, claiming that Iran's army would soon test closing the vital Strait of Hormuz, a waterway that sees the passage of at least a third of all oil shipped to the West.
Meanwhile, the United States has long stated that any closure of the Straits would be considered an act of war. According to news sources, an Iranian army spokesperson had no comment. The Iranian parliament member that made the comments, Parviz Sarvari, told an Iranian media outlet that "soon we will hold a military maneuver on how to close the Strait of Hormuz. If the world wants to make the region insecure, we will make the world insecure."
Any closure could lead to a massive brawl by Western countries, and perhaps even Middle Eastern countries would join, unable to send their product out of the Middle East, hurting their economies.
On the flip side, the United Arab Emirates (UAE) has declared that a pipeline meant to go around the Strait is nearly complete. According to the AP, "The oil minister of the United Arab Emirates says a new crude oil pipeline that will bypass the strategically sensitive Strait of Hormuz is almost finished."
The pipeline certainly wouldn't be able to offset the entire interruption of any closure of the Strait of Hormuz, but shows that other Middle Eastern countries are concerned about the possibility of Iran closing the Strait, and the dire effect it could have on their economy.