Greece underwent its biggest peacetime evacuation ever when about 72,000 people were forced from their homes in the city of Thessaloniki. The cause? A World War II bomb discovered below a petrol station.

The bomb was defused, removed and destroyed.

Bombs of a different nature were on the minds of military experts in Asia and the US, after North Korea successfully launched what it say was a nuclear-capable missile over the weekend.

The North's state-run KCNA news agency said leader Kim Jong-un supervised the test of the Pukguksong-2. North Korea has conducted five nuclear tests, including two last year, although its claims to be able to miniaturise a nuclear weapon to be mounted on a missile have never been independently verified.

And the bombshells keep dropping with the Trump administration.

Most recently, the revelations that National Security Adviser General Michael Flynn had numerous conversations with Russian officials before Donald Trump became President continues to dog the White House.

In a troubling sign for Flynn, even as adviser Stephen Miller got kudos from Trump, for his claim made on Sunday talk shows that when dealing with courts on immigration "the President's powers ... are beyond question", the White House has been silent on Flynn.

For all of the drama of Trump's first weeks in office, there is a movement afoot in US Congress to invite Prime Minister Malcolm Turnbull to address a joint session of the House and Senate.

Even if such a make-nice gesture does occur, Trump's unpredictable nature will keep people guessing.

Overnight, Democrat senator Al Franken repeated his story that even some Republican members of the Senate have "great concern" about Trump's temperament.

Fairfax will follow these stories as they continue to develop.

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