In early July 2019, Iran didn’t seem to care much that it crossed the red line for war.

At the time, according to the International Atomic Energy, Iran has now exceeded the amount of low-enriched uranium permitted under the nuclear agreement. While Iran says it’s not in violation, arguing that Iran was right to do so after the U.S. abandoned the deal, it could put it on a direct collision course with President Trump.

Iran also said it would begin enriching uranium at a higher level that is permitted under the 2015 nuclear deal within days, says Iranian President Hassan Rouhani, as quoted by CNN.

They’ve also said they would restart work on the Arak heavy-water reactor, which had been suspended under the 2015 deal, as well. “We will raise the level of enrichment to the amount we want and need,” they added.

As a result of increased tensions, Israel also threatened to launch a unilateral military attack against Iran in response to news that Tehran has breached the enriched uranium stockpile limit. All as Israeli Foreign Minister Israel says the development translates to an imminent threat to his country, as noted by The Times of Israel.

“Israel will not allow Iran to obtain nuclear weapons, even if it has to act alone on that,” Katz told Army Radio. He added that Tehran’s “mistakes in the gray area will lead it to the red zone—a war in which it will be hit hard.” Netanyahu also said Iran’s uranium enrichment progress as a “significant step” toward building nuclear weapons.

All of this was very likely to be a catalyst for defense stocks, including top defense ETFs.

Three Top Defense ETFs

SPDR S&P Aerospace & Defense ETF (XAR)

The SPDR S&P Aerospace & Defense ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the S&P Aerospace & Defense Select Industry Index.  It has holdings in Axon Enterprise Inc., Textron Inc., and Orbital ATK Inc. for example.

iShares U.S. Aerospace & Defense ETF (ITA)

The iShares US Aerospace & Defense ETF invests in stocks in the domestic aerospace and defense sector. These stocks can include companies that manufacture both commercial and military aircraft as well as other types of defense-related equipment. It has holdings in Boeing, United Technologies Corporation, Lockheed Martin, Raytheon, General Dynamics, and Northrop Grumman for example.

Power Shares Aerospace & Defense ETF (PPA)

The Invesco Aerospace & Defense ETF tracks a market-cap-weighted index of US-listed stocks involved in the defense, military, homeland security and space industries.  It has holdings in Boeing, United Technologies, Honeywell International, Raytheon, and General Dynamics.