Hello! لام is the verb in "infinitive ", it's also used for third-person singular. Ex: he blames his wife=لام زوجته in your example "blame" refers to "us", we blame our arabic regimes=نلوم أنظمتنا العربية I hope this anwers your question :)

If you are using a dictionary based on the Arabic root system, look up نلوم under لوم Alif ا is never part of the root. If a long vowel is part of the root it is either ي or و. In this case a و :)

يـلـوم (v) blame. نـلـوم we blame. " but when I look it up (under "لام") I can't match that definition." ( TRY THIS ONE يلوم ) I guess it appeared to you things like ( ل or لام ) which means the 23rd letter in Arabic or a noun or the verb you need to know about. ___ I will try to make it easy for you to understand the meaning of the sentences you took form the article. هذا الوضع الذي نلوم به بعض أنظمتنا العربية Read till the word العربيه You will find that the translation means : This situation which by it we blame our Arabian regime. " Why we blame the Arabian regime " here the next part comes: المتخاذلة عن فك حصار غزة بل بالدفاع عن قضيتنا الأم وهويتنا الإسلامية بتحرير أراضينا السليبة والمسجد الأقصى الذي يدنس يومياً من قبل الصهاينة. Because its a weakened against loosening the blockade on Gaza and defend our case ........ etc. __ نلوم به أيضا الفلسطينيين في قطاعي غزة والضفة الغربية الذين بعد أن توحدوا تفرقوا من جديد فزادوا الطين بلة وأسعدوا بعض أنظمتنا العميلة We also blame the Palestinians in Gaza and western bank " Why we blame them because" after they united they disassembled again, they added an insult to the injury and they pleased the double-client regime. I hope it makes sense now.