俄罗斯总统弗拉基米尔·普京对邻国乌克兰的“特殊军事行动”始于2月24日，俄罗斯军队从北部的白俄罗斯和东部的俄罗斯入侵。据美国官员称，乌克兰军队进行了“顽强抵抗”。
此后，俄罗斯军队在乌克兰东部有争议的顿巴斯地区发动了全面地面进攻，占领了战略港口城市马里乌波尔，并确保了通往莫斯科吞并的克里米亚半岛的沿海走廊。
五月十九日，晚上八点零七分
拜登将在国外签署乌克兰援助法案
乔·拜登总统将签署400亿美元的乌克兰援助法案一名白宫官员说，他正在亚洲。
国家安全顾问杰克·沙利文周四晚上在前往该地区的途中在空军一号上对记者说:“总统确实打算在路上签署这项法案，以便他能够尽快签署。”“现在正在制定相关的模式，以便他能够拿到并签署。”
该法案于周四早些时候在参议院获得两党支持，需要飞往该地区，以便拜登签署。将法案空运给总统签字的做法可以追溯到杜鲁门政府，但这是拜登的第一次。
拜登周四启程前往韩国，并将在本周晚些时候访问日本，这是他作为总统的首次亚洲之行。
5月19日下午2点33分
布林肯授权削减价值1亿美元的武器装备
美国国务卿安东尼·布林肯周四宣布，他已授权从美国国防部库存中为乌克兰削减价值1亿美元的额外武器和装备。
这使得自俄罗斯2月24日入侵乌克兰以来，美国对乌克兰的军事援助总额达到约39亿美元的武器和装备。
布林肯在一份声明中说，“美国致力于帮助乌克兰继续满足其国防需求，建设其未来能力，并支持北约东翼和更广泛地区的盟友和伙伴。”。
5月19日下午1点36分
参议院通过400亿美元援助乌克兰的一揽子计划
参议院周四投票通过了一项法案新增400亿美元的军事和经济援助在乔·拜登总统呼吁国会提供更多资金后。
该法案获得了两党的支持，以86票对11票获得通过。
众议院本月早些时候通过了一揽子援助计划，现在正送往拜登的办公桌上签字。
多数党领袖查克·舒默(Chuck Schumer)在投票前的发言中表示，“通过这个援助计划，参议院现在可以对乌克兰人民说，帮助就在路上:真正的帮助，重要的帮助，可以确保乌克兰人民取得胜利的帮助。”
5月19日下午1点12分
美国参谋长联席会议主席对俄罗斯同行讲话
美国参谋长联席会议主席米勒星期四与俄罗斯总参谋长格拉西莫夫举行了自入侵乌克兰以来的首次会谈。他们最后一次通话是在2月11日。
根据美国的一份声明，两人讨论了几个与安全有关的问题，并同意保持沟通渠道的畅通，但他们谈话的具体细节是保密的。
俄罗斯国防部表示，双方“讨论了共同关心的问题，包括乌克兰局势，”在一次据称由美国发起的通话中。
Russia-Ukraine live updates: Russia fires top commanders over Ukraine war failures
Russian President Vladimir Putin's "special military operation" into neighboring Ukraine began on Feb. 24, with Russian forces invading from Belarus, to the north, and Russia, to the east. Ukrainian troops have offered "stiff resistance," according to U.S. officials.
The Russian military has since launched a full-scale ground offensive in eastern Ukraine's disputed Donbas region, capturing the strategic port city of Mariupol and securing a coastal corridor to the Moscow-annexed Crimean Peninsula.
May 19, 8:07 pm
Biden to sign Ukraine aid bill while abroad
President Joe Biden will sign the$40 billion Ukraine aid billwhile he's in Asia, a White House official said.
"The president does intend to sign the bill while he's on the road so that he can sign it expeditiously," national security adviser Jake Sullivan told reporters aboard Air Force One while en route to the region Thursday evening. "The modalities of that are being worked right now so that he can get it and sign it."
The bill, which passed the Senate earlier Thursday with bipartisan support, will need to be flown to the region so that Biden can sign it. The practice of flying bills to presidents for signature dates back to the Truman administration, but this is a first for Biden.
Biden departed for South Korea Thursday and will visit Japan later in the week during his first trip to Asia as president.
May 19, 2:33 pm
Blinken authorizes drawdown of arms and equipment worth $100 million for Ukraine
U.S. Secretary of State Antony Blinken announced Thursday that he has authorized a 10th drawdown of additional arms and equipment for Ukraine worth $100 million from U.S. Department of Defense inventories.
This brings total U.S. military assistance to Ukraine to approximately $3.9 billion in arms and equipment since Russia invaded Ukraine on Feb. 24.
"The United States is committed to helping Ukraine continue to meet its defense needs and build its future capabilities, as well as to bolster Allies and partners across NATO’s Eastern Flank and the broader region," Blinken said in a statement.
May 19, 1:36 pm
Senate passes $40 billion aid package for Ukraine
The Senate voted on Thursday to pass anadditional $40 billion in new military and economic aidfor Ukraine after President Joe Biden called on Congress for more funding.
The bill received bipartisan support, passing with a vote of 86-11.
The House passed the aid package earlier this month, which is now headed to Biden's desk for signing.
"By passing this aid package the Senate can now say to the Ukrainian people help is on the way: real help, significant help, help that could ensure the Ukrainian people are victorious," Majority Leader Chuck Schumer said during his floor remarks before the vote.
May 19, 1:12 pm
US chairman of joint chiefs speaks to Russian counterpart
U.S. Chairman of the Joint Chiefs of Staff Gen. Mark A. Milley spoke with Chief of Russian General Staff Gen. Valery Gerasimov Thursday, for the first time since the invasion of Ukraine. They last spoke on Feb. 11.
The two discussed several security-related issues of concern and agreed to keep the lines of communication open, according to a readout from the U.S., but the specific details of their conversation were kept private.
The Russian Ministry of Defense said the two sides "discussed issues of mutual interest, including the situation in Ukraine," in a call it said was initiated by the U.S.
