Washington (CNN) Hillary Clinton and Donald Trump battled on Twitter Thursday after the presumptive Republican nominee criticized President Barack Obama for endorsing his former secretary of state, a preview of the sharp general election fight to come.

The sparring kicked off Thursday afternoon, coming shortly after Trump's tweet attacking Obama's endorsement.

Trump-branded clothes that don't read "Made in Mexico" often say " Made in China ." Trump explained this in 2011 by declaring , "China so manipulates their currency it makes it almost impossible for American companies to compete."

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

In 2014, Trump invested $20 million in a property in County Clare -- the downside is that it's collapsing into the sea. His proposal to build what Friends of the Irish Environment termed a " monster sea wall " met with local outrage.

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

This popular Swedish site allows people to give Donald a blast of trump(et). It's been blown 110,000,000 times and counting.

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

2015 saw the announcement of Trump's first and second properties in Asia, with a resort situated in " the most magnificent location in Bali " and another in Lido Lakes that shall be " the pride of Indonesia ."

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

Melania, the third Mrs. Trump, is from Sevnica. Some locals are hopeful a Trump win might lead to publicity and additional donations from Melania . (She gave to the local health clinic after the 2006 birth of their son, Barron.)

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

Clearly not content with being known just as the birthplace of Ivana, the first Mrs. Trump, the Czech town of Zlin in 2014 staged the country's largest ever pillow fight.

Czech Republic – Clearly not content with being known just as the birthplace of Ivana, the first Mrs. Trump, the Czech town of Zlin in 2014 staged the country's largest ever pillow fight.

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

Kallstadt is Trump's German ancestral home. However, when Deutsche Welle contacted Trump's distant relations they elicited little more on the record than, " Hopefully this hype will ease up soon ."

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

"When Mexico sends its people, they're not sending their best," Trump famously said . "They're bringing drugs. They're bringing crime. They're rapists. And some, I assume, are good people." This fiery Mexico City tribute shows how this statement went down in the country.

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

Trump's development of an Aberdeen golf resort triggered a vicious (and still ongoing) feud with neighbors, who gave their side in the 2011 film " You've Been Trumped.

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

Donald Trump is truly a man of the world , even if the world doesn't always see it that way. Click through the gallery to see what we mean.

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

The Donald Trump guide to the rest of world

Photos: The Donald Trump guide to the rest of world

"Obama just endorsed Crooked Hillary. He wants four more years of Obama—but nobody else does," Trump tweeted.

Obama just endorsed Crooked Hillary. He wants four more years of Obama—but nobody else does!

"Delete your account," the presumptive Democratic nominee fired back. The message was not signed "-H," which is how Clinton usually signs tweets she authored, suggesting this specific tweet was written by Clinton's staff.

JUST WATCHED President Barack Obama endorses Hillary Clinton Replay More Videos ... MUST WATCH President Barack Obama endorses Hillary Clinton 02:24

Trump returned fire later Thursday, citing Clinton's controversial use of a private email serve while serving as secretary of state, in his attack.

"How long did it take your staff of 823 people to think that up--and where are your 33,000 emails that you deleted," he tweeted.

How long did it take your staff of 823 people to think that up--and where are your 33,000 emails that you deleted? https://t.co/gECLNtQizQ — Donald J. Trump (@realDonaldTrump) June 9, 2016

Clinton's tweet also had other cheeky Republican detractors. The Republican National Committee's communications director, Sean Spicer, tweeted, "Like with a cloth?" a reference to an off-hand comment Clinton had previously made dismissing criticism of her use of a private email server while serving as secretary of state that was eventually wiped.

Like with a cloth? https://t.co/IVO8bcwMA5 — Sean Spicer (@seanspicer) June 9, 2016

And Republican National Committee Chairman Reince Priebus tweeted "if anyone knows how to use a delete key," it's Clinton.

.@HillaryClinton If anyone knows how to use a delete key, it's you. — Reince Priebus (@Reince) June 9, 2016

But the morning after Massachusetts Sen. Elizabeth Warren endorsed Clinton, she reinforced the presumptive Democratic nominee's original command to Trump with "No, seriously -- Delete your account."



No, seriously -- Delete your account. https://t.co/O1u7oc0jAR — Elizabeth Warren (@elizabethforma) June 10, 2016

Obama endorsed Clinton in a web video Thursday.

"I want those of you who have been with me since the beginning of this incredible journey to be the first to know that I'm with her," Obama continued. "I am fired up. And I can't wait to get out there and campaign with Hillary."