News Analysis: Entering a sixth month of war, Ukraine faces thorny dilemmas 

Holding their own plastic guns, Maksym and Andrii, both 11, salute Ukrainian soldiers while playing at their self-made “checkpoint” near Kharkiv on Wednesday.

(Evgeniy Maloletka / Associated Press)

KYIV, Ukraine — 

The explosion is invariably spectacular: a gigantic spewing fireball, often followed by a slow-motion airborne cascade of secondary blasts. As soon as such footage finds its way online, exultant Ukrainian commentary erupts: “It’s HIMARS o’clock!”

As its war with Russia enters a sixth month, Ukraine has been celebrating recent battlefield successes generated by sophisticated launchers known as High Mobility Artillery Rocket Systems, or HIMARS. The Pentagon has provided or promised a dozen of the advanced systems, capable of hitting targets up to 50 miles away.

Following Russia’s full-scale invasion of its smaller neighbor on Feb. 24, the conflict has veered from Moscow’s initial failed effort to capture the capital, Kyiv, to substantial Ukrainian territorial losses this summer in the country’s eastern industrial heartland.

Now the combat calculus appears to be shifting yet again, with Ukrainian forces, assisted by their new weaponry, striking dozens of sites, including Russian ammunition dumps, troop concentrations and bridges. That is seen as likely preparation for an offensive to regain Russian-held territory in the country’s south, near the Black Sea coast.

“Ukrainian forces are now using long-range rocket systems to great effect,” U.S. Defense Secretary Lloyd J. Austin III said last week during a virtual meeting of 50 countries that are donating equipment to Ukraine. “I think that everyone here understands the difference that they’ve made on the ground.”