National security adviser John Bolton's message came shortly after Trump himself railed on Twitter against #40YearsofFailure since Iran's Islamic Revolution.
The U.S. chief of naval operations said his forces had a "number of options" in dealing with an increasingly powerful Russian navy.
Russia's deputy foreign minister said U.S. medium-range missiles "would mean everything that was a cornerstone of European security for decades has perished."
France conducted a rare test of its medium-range air-to-surface missile, the U.S. fired a Minuteman III intercontinental ballistic missile and Russia launched a RS-24 Yars ICBM.
Secretary of State Mike Pompeo was also "very confident that Vladimir Putin's efforts will fail" in the Middle East.
Iran successfully tested the Hoveizeh cruise missile and have mounted precision warheads to the Khorramshahr 2 ballistic missile.
President Donald Trump said the U.S. "will work with NATO and our other allies and partners to deny Russia any military advantage from its unlawful conduct."
The military can be a gateway to some very valuable experiences for the right person.
"The military's withdrawal of support from Maduro is crucial to enabling a change in government," Juan Guaidó said.
"People need to stop saying that Donald Trump is taking a different position than all of his intel chiefs and from the United States military," "Morning Joe" host Joe Scarborough said.
"The United States is the world's number one power, and its military strength is unparalleled," China said. "If even the United States feels that threats are in all directions, what should other countries do?"
A U.S. District Court sentenced an ex-U.S. Marine reserve officer to almost three years in prison on felony cyberstalking charges last week.
"In the face of any aggression, of any nature and intensity, we will defend Venezuela, as it belongs to us," said Defense Minister Vladimir Padrino, who is standing by embattled President Nicolás Maduro.
White House national security adviser warned of a "significant response" to any harm that came to U.S. citizens at the hands of Venezuela.
The country's self-declared interim president asked supporters to take to the streets on Wednesday.
The senator said Trump was discussing military options just weeks ago.
Venezuela has reportedly accepted the offer, citing Russia's "great similar experience" in settling world conflicts.
The United States has called on Venezuela's Nicolás Maduro to step down, but Russia is backing him.
Russia defended its new 9M729 cruise missile, claiming it fell short of the range restricted by the 1987 Intermediate-range Nuclear Forces treaty that the U.S. is threatening to leave.
Catholic League President Bill Donohue criticized Native American activist Nathan Phillips' Covington confrontation, saying, "it wasn't the white kids who called the Indians savages, it was the black thugs."
At the same time, the French government assured its population it would never cede the once-disputed Alsace-Lorraine territory to Germany, nor would locals be forced to speak German.
"China is expressing its extreme discontent and strong objection" to President Donald Trump's 2019 Missile Defense Review.
A foreign ministry spokesperson said the Pentagon report was "extremely unprofessional and contained absurd accusations."
Israeli companies are criticized when dictators use their technology to clamp down on dissent. Can anything be done?