headlines: In Eastern Ukraine, Attacks Intensify as Russia Readies New Offensive
articles: The Ukrainian police guard the last checkpoint on the edge of the town of Sloviansk, hunkered down in the woods just a few miles from the front line. Police officers edged toward their bunker midday Saturday as a Ukrainian multiple rocket launcher roared into action nearby, firing a volley toward Russian positions.
  
  Villages beyond the checkpoint remain in Ukrainian hands but have come under blistering bombardment for weeks. Russian artillery hit the area Saturday morning, setting fire to trees and undergrowth flanking the main highway. The fields were still smoldering midday Saturday when New York Times journalists drove through.
  
  President Vladimir V. Putin has said his aim is to bring Ukraine’s eastern provinces of Luhansk and Donetsk under Russian control. Parts of the two provinces have been under the control of pro-Russian separatists since 2014, and Russia’s invasion forces have concentrated their efforts on the remaining area since they pulled back from around Kyiv at the end of March.
  
  Russia has announced an operational pause as its troops regroup after the intense battles for two cities to the east in Luhansk, Sievierodonetsk and Lysychansk. But Ukrainian officials and civilians said heavy fighting was continuing in the frontline villages as Russian forces pursued their push westward, and Ukrainian troops remained determined to make them fight for every inch of land.