BRUSSELS — With Europe on edge, soldiers fanned out to guard possible terror targets in Belgium Saturday while police in Greece detained at least two suspects as part of a widening counterterrorism dragnet across the continent.

WASHINGTON—President Barack Obama will call for increasing taxes on the wealthiest Americans then using the revenue to fund new tax credits and other cost-saving measures for the middle class in his first address before a Republican-led Congress.

SINGAPORE—US academics and former senior officials met with North Korea’s chief nuclear negotiator in Singapore on Sunday to get a feel for each other’s positions amid a yearslong standoff over the North’s nuclear weapons buildup.

Gregory Katz London—Kalashnikov assault rifles. Plenty of ammunition. Molotov cocktails, a grenade, a death-dealing Skorpion machine pistol and a few handguns.

Obama will use a Monday event at the Federal Trade Commission to lay out the next steps of a plan to tackle identity theft and improve consumer and student privacy.