The pace of fighting is intensifying as the war in Ukraine stretches into its seventh month, with Ukraine seeking to exploit Russian weaknesses in the south and Moscow signaling that it might reinforce its troops in the east to renew its stalled campaign. Ukraine’s military has imposed sweeping restrictions on journalists as its forces mount a counteroffensive to retake territory seized by Russia in the south of the country. The Russians have leaped into the void, trying to characterize the counteroffensive — one week in — as a failure, without providing evidence to support the claims. “The Russian presentation of...