Based on the available fact-checks, this claim does not hold up.
- The claim closely mirrors a statement President Trump made in his 2026 State of the Union address: "In my first 10 months, I ended eight wars," listing Cambodia/Thailand, Pakistan/India, Kosovo/Serbia, Israel/Iran, Egypt/Ethiopia, Armenia/Azerbaijan, Congo/Rwanda, and Gaza.
- A DW fact-check specifically reviewed this "ended eight wars" claim and rated it false — several of the cited pairs were not active wars, some ceasefires were fragile or unrelated to US mediation, and the framing overstates the US role.
- This aligns with broader fact-checking of Trump's conflict claims: PolitiFact rated his related statement "We've never had a president that solved one war, not one war" as Pants on Fire.
- The claim is also imprecise about timing/scope ("first year in office," "under 12 months"), but its core assertion — that Trump solved eight conflicts — is directly contradicted by the professional fact-checks.
Overall validity: 0%