Western Allies Urge Caution as Israel Moves Closer to Ground Invasion

WASHINGTON—As Israel signals that it is closer to launching its anticipated ground offensive, U.S. and European officials are urging caution in an effort to minimize a prolonged urban war that could result in even more casualties and a turbulent future for Gaza, U.S. and foreign officials said.

Israel’s Western allies have worked to support the government of Benjamin Netanyahu in its preparations to storm northern Gaza and root out Hamas fighters who are believed to be holding hostages in a maze of underground tunnels, but growing concerns over the humanitarian catastrophe in the tiny territory have prompted pleas for taking time to develop an attack and post-attack strategy.