Impeachment: Trump claims victory

US President Donald Trump has claimed victory as the Democratic Party-controlled House of Representatives concluded its third public hearing on the impeachment proceedings against him for allegedly abusing his office for political gain in the run up to the 2020 presidential election.

The impeachment hearings are an effort by Democrats to establish whether Trump withheld US military aid to Ukraine to pressure the country's President Volodymyr Zelensky into announcing a corruption inquiry into Joe Biden, Trump's leading Democratic rival in the poll.

The Democrats are alleging that Trump's call with his Ukrainian counterpart was irregular and inappropriate and abuse of his office for political gain.

'A great day for Republicans, a great day for our Country! In the end we will win and save our Country from certain destruction,' Trump tweeted soon after the House Select Committee on Intelligence concluded its third public impeachment hearings on Tuesday.

In the morning, Democratic lawmakers grilled Lt Col Alexander Vindman, a Ukraine specialist on the National Security Council (NSC), and Jennifer Williams, a top national security aide to Vice President Pence on Trump's 25 July phone call with Ukrainian President Zelensky.