Seeing slow progress, leaders face disparate nuclear threats

WASHINGTON (AP) — Dozens of world leaders assembling Friday for a nuclear security summit will confront a disparate array of modern-day threats, ranging from government actors like North Korea to murkier groups like the Islamic State. Frustration over the slow pace of reducing nuclear stockpiles shadowed the final day of the summit, President Barack Obama's last major push on denuclearization. Though Obama planned to tout the Iran nuclear deal as evidence of progress, the absence of key players

WASHINGTON (AP) — Dozens of world leaders assembling Friday for a nuclear security summit will confront a disparate array of modern-day threats, ranging from government actors like North Korea to murkier groups like the Islamic State. Frustration over the slow pace of reducing nuclear stockpiles shadowed the final day of the summit, President Barack Obama's last major push on denuclearization. Though Obama planned to tout the Iran nuclear deal as evidence of progress, the absence of key players…