拜登等美西方领导人此前表态，“现在不是乌克兰加入北约的时机”。拜登称，因为俄乌冲突仍在进行，根据承诺，一旦乌克兰现在加入，等同于“北约也将与俄罗斯开战”。

wen：riqianjuxingdebeiyueweierniusifenghuifabulianhegongbao，chengzhongguodeyexinhexiepoxingzhengcetiaozhanbeiyuedeliyi、anquanhejiazhi，chengzhongguogoucheng“xitongxingtiaozhan”。qingwenzhongfangduiciyouhepinglun？<(<)s(s)t(t)r(r)o(o)n(n)g(g)>(>)问(wen)：(：)日(ri)前(qian)举(ju)行(xing)的(de)北(bei)约(yue)维(wei)尔(er)纽(niu)斯(si)峰(feng)会(hui)发(fa)布(bu)联(lian)合(he)公(gong)报(bao)，(，)称(cheng)中(zhong)国(guo)的(de)野(ye)心(xin)和(he)胁(xie)迫(po)性(xing)政(zheng)策(ce)挑(tiao)战(zhan)北(bei)约(yue)的(de)利(li)益(yi)、(、)安(an)全(quan)和(he)价(jia)值(zhi)，(，)称(cheng)中(zhong)国(guo)构(gou)成(cheng)“(“)系(xi)统(tong)性(xing)挑(tiao)战(zhan)”(”)。(。)请(qing)问(wen)中(zhong)方(fang)对(dui)此(ci)有(you)何(he)评(ping)论(lun)？(？)<(<)/(/)s(s)t(t)r(r)o(o)n(n)g(g)>(>)