Following the Soviets' blockade of Berlin, this began the Cold War in earnest.

FORBES: Fact and Comment

"Bad news would be a supply shock - if you did have a blockade of the Strait of Hormuz or a war in the Middle East, " Koll said.

CNN: Oil increases to highest level since 2008

The country has found it difficult to escape from poverty, partly because of a trade blockade imposed by neighbouring Turkey and Azerbaijan since the 1990s war with Azerbaijan over Nagorno-Karabakh.

BBC: Armenia President Serge Sarkisian wins new term