Dilmun and its Gulf neighbours.

In 1993, Yemen launched an unsuccessful diplomatic offensive to restore relations with its Gulf neighbors.

Despite its oil-rich Gulf neighbors, Bahrain's oil, discovered in 1932, has "virtually dried up" making it poorer than other countries in its region.

Traditional Bahraini architecture is similar to that of its Gulf neighbours.

An archipelago with a population under 700,000, Bahrain does not have the energy wealth of its Gulf neighbors and has relied on Saudi oil in the past.

Despite its oil-rich Gulf neighbors, Bahrain's oil, discovered in 1932 has "virtually dried up" making it relatively poor compared to countries in its region.

Iran is ever more sharply at odds with its Gulf neighbours, who in turn are giving public voice to longstanding fears about Persian power.

The architecture of Bahrain is similar to that of its Gulf neighbours.

The Gulf neighbors have since restored their ties and have conducted joint military exercises as recently as February 2011.

The evidence cited is the assurance Iran has offered its Gulf neighbors that it has given up its designs on them.