Mourners carry the bodies of members of Iraq's Hashed al-Shaabi, or Popular Mobilisation Forces (PMF), a paramilitary alliance that includes pro-Iran groups, who were killed earlier in Diyala in central Iraq by U.S.-Saudi strikes, during the funeral in Baghdad, Wednesday. AFP-Yonhap

WASHINGTON — The stop-start fighting between the United States and Iran appears to have entered a new phase as Saudi Arabia has publicly joined military escalations against Tehran-backed proxies. At the same time, an already untenable diplomatic effort to end the war has faltered once again as mistrust deepens between the longtime adversaries.

Despite several days of relative calm , both sides carried out military strikes in the last 24 hours that once again risk a return to all-out war — and further expansion in the region — while little is clear about what strategy, if any, American or Iranian officials have for a path forward.

While President Donald Trump and his allies have spent recent days arguing that Iran is begging to return to the negotiating table, Iran’s deputy foreign minister said Tuesday that his country has made no requests to restart the diplomatic track in more than two weeks.

Following a thwarted attack on the U.S. base in Jordan, Trump turned back to threats Wednesday even while sustaining the prospect of continued talks.