Todor Zhivkov

At the time of his death, Markov worked as a journalist and broadcaster.

His broadcasts frequently criticised the Bulgarian government, including its leader, Todor Zhivkov.

The attack actually occurred on Zhivkov's birthday in 1978.

Many suspect that the Bulgarian Secret Service or the Russian KGB were involved in the case of the poisoned umbrella.

Key's lyrics proved just as stirring, and within weeks it was published in papers across the country.

But it wasn't until 1931 that the Star Spangled Banner was officially confirmed as America's national anthem.

Cleopatra's needle, a huge granite obelisk nearly 3,500 years old, was given to the British in 1819 by the Egyptian leader Muhammad Ali.

The gift was to thank them for two victories in battles during the French invasion of Egypt.