The biggest story to dominate the political headlines for the last six months has been over Donald Trump and his alleged ties to Russia. As the president continues to deny any wrongdoing, he's now shifting the blame onto his predecessor.

Trump on Twitter

It's been almost a nightmare out of the film "Groundhog Day" for President Donald Trump. No matter what news breaks to the public, the scandal involving Russia is never too far behind. From the early days of the 2016 presidential election to this sixth month in the White House, Trump has faced a daily onslaught of criticism over the issue at hand.

In addition to his critics in Washington, Trump has also been dealing with the majority of the mainstream media who continue to hold his feet to the fire, with many well-respected news outlets and government agencies releasing information that contradicts the president's defense. In recent days, the former host of "The Apprentice" has decided to take a different course of action, this time attacking Barack Obama, while accusing the former president of ignoring warnings about Russia's hack of the Democratic National Committee. As seen in a series of tweets on June 26, Trump didn't hold back.

Taking to his Twitter account on Monday morning, Donald Trump lashed out at Barack Obama over the Russian investigation and scandal.

"The reason that President Obama did NOTHING about Russia after being notified by the CIA of meddling is that he expected Clinton would win and did not want to 'rock the boat,'" Trump tweeted, before adding, "He didn't 'choke,' he colluded or obstructed, and it did the Dems and Crooked Hillary no good."

"The real story is that President Obama did NOTHING after being informed in August about Russian meddling," Donald Trump added in a follow-up tweet.

"With 4 months looking at Russia under a magnifying glass, they have zero 'tapes' of T people colluding. There is no collusion & no obstruction," he continued, before stating, "I should be given apology!" Trump's latest twist in his defense has taken a unique turn, with Obama not yet offering a rebuttal.

Moving forward

While it's unlikely that Barack Obama or the Democratic Party will be offering an apology to Donald Trump anytime soon, it doesn't appear that the commander in chief and his supporters will be backing off. As the scandal and investigation continues, only time will tell how it all plays out.