Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. What's Behind Trump's Criticism of Obama Katherine Gypson U.S. President Donald Trump is facing a crowded field of 2020 Democratic presidential candidates. But when the president speaks, it is Barack Obama - his predecessor - who takes the brunt of Trump's barbs and insults. Trump has criticized the former president on issues ranging from U.S. policy in Syria to trade negotiations with China to the amount of time Obama spent playing golf during his presidency. Trump's latest criticism came at the G-7 summit press conference in France this week when he claimed Russian President Vladimir Putin had "outsmarted" Obama by annexing Ukraine's Black Sea peninsula of Crimea. Trump mentioned Obama in 246 tweets An analysis of the president's tweets in the Trump Twitter Archive shows that Obama was mentioned or berated 246 times during Trump's 951 days in office. That compares with Trump's 313 mentions of former Secretary of State Hillary Clinton, Trump's 2016 Democratic rival for president and favorite target for insults. Obama's negotiation of the Iran nuclear deal -- which Trump disavowed after taking office -- often figures in Trump's tweets. For example, the president wrote on June 21 that "President Obama made a desperate and terrible deal with Iran - Gave them 150 Billion Dollars plus I.8 Billion Dollars in CASH! Iran was in big trouble and he bailed them out. Gave them a free path to Nuclear Weapons, and SOON. Instead of saying thank you, Iran yelled..." .