In breaking news, US House Speaker Nancy Pelosi has announced a formal impeachment inquiry of American President Donald Trump, stating that actions taken by the President had "seriously violated the constitution". 

The decision was made to launch formal proceedings after a growing scandal involving a phone call between Mr Trump and the Ukrainian President, Volodymyr Zelensky, in which he allegedly asked the Eastern European leader to launch a probe into his presidential competitor Joe Biden, and his son, Hunter.

As calls for impeachment amplified in Washington, Mr Trump announced that he had ordered the release of the unredacted transcript of his summer call with Mr Zelenskiy.