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WATCH: Republican counsel presses Yovanovitch about Ukrainians’ criticism of Trump

A Republican lawyer has asked former Ambassador Marie Yovanovitch about efforts by Ukrainian officials to undermine Donald Trump’s 2016 presidential campaign.

Yovanovitch answered questions on Nov. 15 as part of the impeachment hearings into President Donald Trump. Watch in the player above.

GOP lawyer Steve Castor cited a 2016 op-ed in The Hill newspaper, written by Ukraine’s then ambassador to the U.S., which criticized Trump for comments that appeared to suggest Russia’s annexation of Crimea was valid. Ukraine strongly opposes the annexation.

Castor said the op-ed showed that Ukrainian officials supported Hillary Clinton in the 2016 campaign, adding that the ambassador “said some nasty things” about Trump in the op-ed and on Twitter.

Yovanovitch replied, “Sometimes that happens on social media.”

READ MORE: A guide to the impeachment hearings

Her comment came hours after Trump attacked Yovanovitch on Twitter as she began her testimony in the impeachment inquiry. Trump tweeted, “Everywhere Marie Yovanovitch went turned bad.’’

Democrats call the tweet witness intimidation.