Each week, we'll share with you some of the most compelling numbers in our studies.
400 kg
There is considerable speculation that Kūh-e Kolang Gaz Lā, an underground Iranian nuclear facility near Natanz, may hold Iran’s unaccounted for 400 kg of highly enriched uranium.
SOURCE: "Damage to Iran’s Nuclear Program—Can It Rebuild?" by CSIS's Joseph Rodgers, Heather Williams, and Joseph S. Bermudez Jr.
75 percent
On Wednesday, President Trump proposed a tariff on semiconductors that could raise the cost of AI servers by as much as 75 percent, disrupting data center economics and pricing smaller firms out of frontier AI development.
SOURCE: "How Tariffs Could Derail the United States’ $3 Trillion AI Buildout" by CSIS's Philip Luck.
3
At least three Chinese mobile drilling rigs have been active in the East China Sea near Japan's continental shelf, potentially laying the groundwork for the construction of more permanent platforms in the future.
SOURCE: "Beijing Keeps Busy in East China Sea Oil and Gas" by the CSIS Asia Maritime Transparency Initiative.
1,300
In just the first half of 2025, there have been more than 1,300 measles cases and three deaths in the United States, the highest number since the elimination of domestic measles in 2000.
SOURCE: "Routine Immunizations on the Precipice: Forestalling the Worst Outcomes in the Current Vaccine Landscape" by CSIS's Katherine E. Bliss.
By the Numbers is composed weekly by Lauren Adler and the External Relations team.
The Center for Strategic and International Studies (CSIS) is a bipartisan, nonprofit organization founded in 1962 and headquartered in Washington, D.C. It seeks to advance global security and prosperity by providing strategic insights and policy solutions to decisionmakers.
