The answer: yes.
US presidential candidates Donald Trump and Hillary Clinton argued about several key points that affect nearly everyone on the planet, from the threat of ISIS to nuclear proliferation.
Clinton laid out her plan in broad strokes -- which includes working with allies in the region and targeting the group's leader, Abu Bakr al-Baghdadi
, like the United States did with al Qaeda leader Osama bin Laden. She also vowed to combat ISIS propaganda online.
Trump blamed the terror group's rise and the chaos in the Middle East on the failure of President Barack Obama's and Clinton's leadership.
Trump asserted the group proliferated under Obama's tenure.
He said he's keeping his plan to fight ISIS under wraps, so as not to show the enemy his hand.
Clinton's response: "He says it's a secret plan. But the only secret is that he has no plan."
Iraq on the record
"Wrong." That's what Trump interjected when Clinton claimed he supported the Iraq War.
(Trump was all about the interjections during the debate, as you can see in this mashup here
Trump is doubling, tripling and quadrupling down on his claim he didn't support the war in Iraq.
But CNN's fact checkers
note -- and have previously pointed out -- that Trump was on the record as supportive of the Iraq War as early as a month before Congress voted to authorize military force in Iraq.
NATO and nukes
Global alliances and nuclear nonproliferation were briefly touched upon.
Trump repeated his campaign pledge to take a good look at US alliances such as NATO and make sure they're focused on combating terrorism and that allies are paying their fair share. He added that United States can't be the world's policeman while it's trillions of dollars in debt.
"We defend Japan, we defend Germany, we defend South Korea, we defend Saudi Arabia," he said. "They do not pay us. But they should be paying us, because we are providing tremendous service."
But Clinton said Trump's talk is dangerous and has US allies worried.
She noted that the United States has been a major recent benefactor of NATO, pointing out that the only time the alliance ever invoked its "attack on one is an attack on all clause" was after 9/11 in Afghanistan.
And she used the NATO discussion to shift to nuclear nonproliferation. In the past, Trump has suggested that it may be OK with him if some US allies obtained their own nukes, such as Japan and South Korea.
Iran nuclear deal
Speaking of nukes, Trump blasted the nuclear deal the United States and its allies negotiated with Iran last year, calling it "one of the worst deals ever made by any country in history."
As part of the deal
, Iran must reduce its uranium stockpile by roughly 98%. In return, many of the international sanctions imposed on Iran were lifted.
But Clinton defended the deal, suggesting that Trump had neither the temperament or a plan for dealing with Iran. "If he's going to criticize a deal that has been very successful in giving us access to Iranian facilities that we never had before, then he should tell us what his alternative would be," she said.
China reacts to 'going into North Korea'
When it comes to North Korea -- which conducted its fifth nuclear test this month
-- Trump recommended that the United States try to make China take on a bigger role.
"China should solve that problem for us. China should go into North Korea. China is totally powerful as it relates to North Korea," he said.
Chinese social media giant Weibo played up the debate, making it a recommended topic online.
When asked about Trump's comments, Chinese Foreign Ministry spokesman Geng Shuang said, "The origin and crux of the Korean issue do not rest with China."
"As a permanent member of the UN Security Council, and a close neighbor of the Korean Peninsula, China has been working to maintain peace and stability of the Korean Peninsula," he said.
Who's hacking who?
During a section on cybersecurity, Trump questioned whether Russia was responsible for a series of cyberattacks on election systems in the United States and on the Democratic National Committee (that's the conclusion that many US officials and lawmakers reached, but the Obama administration has not publicly said so.)
"She says, 'Russia, Russia, Russia,' " Trump said. "It could be China. You don't know who broke into the DNC."
He continued, "It also could be somebody sitting on their bed that weighs 400 pounds."
Twitter had some fun with this mysterious hefty hacker:
Trump has spoken highly of Russian President Vladimir Putin and essentially called on Russian hackers
to target Clinton at a July campaign event.
A cost of free trade?
A big part of Trump's appeal has been his populist message that the United States is getting ripped off by bad trade deals.
He cites NAFTA, or the North American Free Trade Agreement,
as one example and said he believes the Obama-negotiated Trans-Pacific Partnership
will be the next.
Clinton is on the record calling TPP a "gold standard" deal in 2012 when she was secretary of state. She now says she opposes it.
Clinton said during the debate Trump "thinks that climate change is a hoax perpetrated by the Chinese."
Trump immediately denied that.
But the Clinton campaign seemed ready for this one on Twitter.