The 30-year US Treasury yield climbed to 5.327% on Tuesday, its highest level in 19 years, as stalled talks to end the US-Iran war and renewed fears of escalation pushed oil prices above $90 a barrel and reignited inflation concerns across global markets. The benchmark 10-year yield rose to 4.739%. The selloff was not contained to US markets either, spreading to Japan, where the 10-year government bond yield hit a 30-year peak, and to Europe, where Germany’s 10-year Bund yield touched its highest level since 2011 and France’s 10-year yield reached a 17-year high.