Ukraine's military has been reporting increasingly heavy Russian shelling.
"During the offensive... the Ukrainian troops randomly retreated to a distance of up to three kilometres (1.9 miles)from the previously occupied lines," the ministry said on the Telegram messaging app.
"Even the more fortified second line of defence of the enemy could not hold the breakthrough of the Russian military."
Reuters was not able to independently verify the battlefield report.
The ministry did not specify in which part of the Luhansk region the offensive took place.
Ukraine's military has been reporting increasingly heavy Russian shelling along the frontline, with officials calling the situation difficult, but also saying that its army has been able to repel many Russian attacks. Ukraine has urged allies to speed up the pace of military aid.
Russia now holds swathes of the southern regions of Kherson and Zaporizhzhia, including its nuclear plant, nearly all of Luhansk and over half of Donetsk, including the regional capital.
Germany and France joined Britain, the Nordics and Baltic states in announcing bans on Russian use of their airspace, a major escalation in a tactic by mostly Nato allies to wage economic war against Putin in retaliation for the invasion.
Huge explosions lit up the sky early on Sunday south of the capital, Kyiv, where people hunkered down in homes, underground garages and subway stations in anticipation of a full-scale assault by Russian forces.
Russian president orders the Russian defence minister and the chief of the military’s General Staff to put the nuclear deterrent forces in a "special regime of combat duty.”
President Vladimir Putin put Russia's nuclear deterrent on high alert on Sunday in the face of a barrage of Western-led reprisals for his war on Ukraine, which said it had repelled Russian ground forces' attempts to capture urban centres.
The Ministry of Human Resources and Emiratisation (MoHRE) revealed that approximately 5.73 million employees have subscribed to the Unemployment Insurance Scheme since it went into effect on Jan.1, 2023, up until Sept.25, 2023.
Sheikh Hamdan inaugurated the third edition of the Dubai World Congress for Self-Driving Transport and honoured the winners of the Dubai World Challenge for Self-Driving Transport.
She added that immediately after the operation, she had severe bleeding and blood accumulation in the neck, after which she was admitted to intensive care for two days.